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<title>Dart : Libraries : box2d : ContactImpulse</title>
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<h1 id="title">class <a name='ContactImpulse::ContactImpulse'>ContactImpulse</a></h1>

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<section class="supertype">
<h2>Supertype:</h2>
<ul><li>Object</li></ul>
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<section id="summary">

 Contact impulses for reporting. Impulses are used instead of forces because
 sub-step forces may approach infinity for rigid body collisions. These
 match up one-to-one with the contact points in <code><a href='Manifold.html#Manifold::Manifold'>Manifold</a></code>.
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<h2>Fields</h2>
<dl>
<dt>
<span class="field-type"><code><code><a href='List.html#List::List'>List&lt;E&gt;</a></code></code></span>
<span class="field-name"><code><a name='ContactImpulse::normalImpulses'>normalImpulses
</a></code></span>
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<dt>
<span class="field-type"><code><code><a href='List.html#List::List'>List&lt;E&gt;</a></code></code></span>
<span class="field-name"><code><a name='ContactImpulse::tangentImpulses'>tangentImpulses
</a></code></span>
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<section id="constructors">
<h2>Constructors</h2>
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<dt>
<code><a href='ContactImpulse.html#ContactImpulse::ContactImpulse'>ContactImpulse</a>()</code>
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<section id="methods">
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